77380834 has 4 divisors (see below), whose sum is σ = 116071254. Its totient is φ = 38690416.

The previous prime is 77380819. The next prime is 77380859. The reversal of 77380834 is 43808377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43808377 = 41 ⋅1068497.

It can be written as a sum of positive squares in only one way, i.e., 75429225 + 1951609 = 8685^2 + 1397^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19345207 + ... + 19345210.

Almost surely, 2^77380834 is an apocalyptic number.

77380834 is a deficient number, since it is larger than the sum of its proper divisors (38690420).

77380834 is a wasteful number, since it uses less digits than its factorization.

77380834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38690419.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 77380834 is about 8796.6376531036. The cubic root of 77380834 is about 426.1323143256.

The spelling of 77380834 in words is "seventy-seven million, three hundred eighty thousand, eight hundred thirty-four".